libsound/mkit/sound_handler_mkit.h

   1 // sound_handler_haiku.h: Sound handling using Mkit media kit
   2 //
   3 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010,
   4 //   2011 Free Software Foundation, Inc
   5 //
   6 // This program is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 3 of the License, or
   9 // (at your option) any later version.
  10
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software
  18 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19
  20 #ifndef SOUND_HANDLER_MKIT_H
  21 #define SOUND_HANDLER_MKIT_H
  22
  23 #include "sound_handler.h" // for inheritance
  24
  25 #include <set> // for composition (InputStreams)
  26 #include <boost/thread/mutex.hpp>
  27 #include <boost/scoped_ptr.hpp>
  28
  29 #include <SoundPlayer.h>
  30
  31 // Forward declarations
  32 namespace gnash {
  33     class SimpleBuffer;
  34     namespace sound {
  35         class EmbedSound;
  36         class InputStream;
  37     }
  38 }
  39
  40 namespace gnash {
  41 namespace sound {
  42
  43 /// Mkit media kit based sound_handler
  44 class Mkit_sound_handler : public sound_handler
  45 {
  46     boost::scoped_ptr<BSoundPlayer> _soundplayer;
  47
  48     /// play buffer handler function
  49     static void FillNextBuffer(void *cookie, void *buffer, size_t size,
  50             const media_raw_audio_format &format);
  51
  52     /// @throw SoundException on error
  53     void openAudio();
  54
  55     bool _audioopen;
  56
  57     /// Mutex for making sure threads doesn't mess things up
  58     boost::mutex _mutex;
  59
  60     /// Mutex protecting _muted (defined in base class)
  61     mutable boost::mutex _mutedMutex;
  62
  63     // See dox in sound_handler.h
  64     void mix(boost::int16_t* outSamples, boost::int16_t* inSamples,
  65                 unsigned int nSamples, float volume);
  66
  67     void MixAudio (boost::uint8_t *dst, const boost::uint8_t *src, boost::uint32_t len, int volume);
  68
  69 public:
  70     Mkit_sound_handler(media::MediaHandler* m);
  71
  72     ~Mkit_sound_handler();
  73
  74     // See dox in sound_handler.h
  75     virtual int create_sound(std::auto_ptr<SimpleBuffer> data, std::auto_ptr<media::SoundInfo> sinfo);
  76
  77     // See dox in sound_handler.h
  78     // overridden to serialize access to the data buffer slot
  79     virtual StreamBlockId addSoundBlock(unsigned char* data,
  80                                        unsigned int data_bytes,
  81                                        unsigned int sample_count,
  82                                        int streamId);
  83
  84     // See dox in sound_handler.h
  85     virtual void    stop_sound(int sound_handle);
  86
  87     // See dox in sound_handler.h
  88     virtual void    delete_sound(int sound_handle);
  89
  90     // See dox in sound_handler.h
  91     virtual void reset();
  92
  93     // See dox in sound_handler.h
  94     virtual void    stop_all_sounds();
  95
  96     // See dox in sound_handler.h
  97     virtual int get_volume(int sound_handle);
  98
  99     // See dox in sound_handler.h
 100     virtual void    set_volume(int sound_handle, int volume);
 101
 102     // See dox in sound_handler.h
 103     virtual media::SoundInfo* get_sound_info(int soundHandle);
 104
 105     // See dox in sound_handler.h
 106     // overridden to serialize access to the _muted member
 107     virtual void mute();
 108
 109     // See dox in sound_handler.h
 110     // overridden to serialize access to the _muted member
 111     virtual void unmute();
 112
 113     // See dox in sound_handler.h
 114     // overridden to serialize access to the _muted member
 115     virtual bool is_muted() const;
 116
 117     // See dox in sound_handler.h
 118     // overridden to close audio card
 119     virtual void pause();
 120
 121     // See dox in sound_handler.h
 122     // overridden to open audio card
 123     virtual void unpause();
 124
 125     // See dox in sound_handler.h
 126     virtual unsigned int get_duration(int sound_handle);
 127
 128     // See dox in sound_handler.h
 129     virtual unsigned int tell(int sound_handle);
 130
 131     // See dox in sound_handler.h
 132     // Overridden to unpause SDL audio
 133     void plugInputStream(std::auto_ptr<InputStream> in);
 134
 135     // See dox in sound_handler.h
 136     void fetchSamples(boost::int16_t* to, unsigned int nSamples);
 137 };
 138
 139 } // gnash.sound namespace
 140 } // namespace gnash
 141
 142 #endif // SOUND_HANDLER_MKIT_H